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<h2><span class="refentrytitle"><a name="GtkBin.top_of_page"></a>GtkBin</span></h2>
<p>GtkBin — A container with just one child</p>
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<a name="GtkBin.functions"></a><h2>Functions</h2>
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<a class="link" href="GtkWidget.html" title="GtkWidget"><span class="returnvalue">GtkWidget</span></a> *
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<td class="function_name">
<a class="link" href="GtkBin.html#gtk-bin-get-child" title="gtk_bin_get_child ()">gtk_bin_get_child</a> <span class="c_punctuation">()</span>
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<a name="GtkBin.other"></a><h2>Types and Values</h2>
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<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GtkBin.html#GtkBin-struct" title="struct GtkBin">GtkBin</a></td>
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<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GtkBin.html#GtkBinClass" title="struct GtkBinClass">GtkBinClass</a></td>
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<a name="GtkBin.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    GObject
    <span class="lineart">╰──</span> GInitiallyUnowned
        <span class="lineart">╰──</span> <a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a>
            <span class="lineart">╰──</span> <a class="link" href="GtkContainer.html" title="GtkContainer">GtkContainer</a>
                <span class="lineart">╰──</span> GtkBin
                    <span class="lineart">├──</span> <a class="link" href="GtkWindow.html" title="GtkWindow">GtkWindow</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkActionBar.html" title="GtkActionBar">GtkActionBar</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkAlignment.html" title="GtkAlignment">GtkAlignment</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkComboBox.html" title="GtkComboBox">GtkComboBox</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkFrame.html" title="GtkFrame">GtkFrame</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkButton.html" title="GtkButton">GtkButton</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkMenuItem.html" title="GtkMenuItem">GtkMenuItem</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkEventBox.html" title="GtkEventBox">GtkEventBox</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkExpander.html" title="GtkExpander">GtkExpander</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkFlowBox.html#GtkFlowBoxChild">GtkFlowBoxChild</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkHandleBox.html" title="GtkHandleBox">GtkHandleBox</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkListBox.html#GtkListBoxRow">GtkListBoxRow</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkToolItem.html" title="GtkToolItem">GtkToolItem</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkOverlay.html" title="GtkOverlay">GtkOverlay</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkScrolledWindow.html" title="GtkScrolledWindow">GtkScrolledWindow</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkPopover.html" title="GtkPopover">GtkPopover</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkRevealer.html" title="GtkRevealer">GtkRevealer</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkSearchBar.html" title="GtkSearchBar">GtkSearchBar</a>
                    <span class="lineart">├──</span> <a class="link" href="GtkStackSidebar.html" title="GtkStackSidebar">GtkStackSidebar</a>
                    <span class="lineart">╰──</span> <a class="link" href="GtkViewport.html" title="GtkViewport">GtkViewport</a>
</pre>
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<div class="refsect1">
<a name="GtkBin.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GtkBin implements
 AtkImplementorIface and  <a class="link" href="GtkBuildable.html" title="GtkBuildable">GtkBuildable</a>.</p>
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<div class="refsect1">
<a name="GtkBin.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gtk/gtk.h&gt;
</pre>
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<div class="refsect1">
<a name="GtkBin.description"></a><h2>Description</h2>
<p>The <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a> widget is a container with just one child.
It is not very useful itself, but it is useful for deriving subclasses,
since it provides common code needed for handling a single child widget.</p>
<p>Many GTK+ widgets are subclasses of <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a>, including <a class="link" href="GtkWindow.html" title="GtkWindow"><span class="type">GtkWindow</span></a>,
<a class="link" href="GtkButton.html" title="GtkButton"><span class="type">GtkButton</span></a>, <a class="link" href="GtkFrame.html" title="GtkFrame"><span class="type">GtkFrame</span></a>, <a class="link" href="GtkHandleBox.html" title="GtkHandleBox"><span class="type">GtkHandleBox</span></a> or <a class="link" href="GtkScrolledWindow.html" title="GtkScrolledWindow"><span class="type">GtkScrolledWindow</span></a>.</p>
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<div class="refsect1">
<a name="GtkBin.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gtk-bin-get-child"></a><h3>gtk_bin_get_child ()</h3>
<pre class="programlisting"><a class="link" href="GtkWidget.html" title="GtkWidget"><span class="returnvalue">GtkWidget</span></a> *
gtk_bin_get_child (<em class="parameter"><code><a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a> *bin</code></em>);</pre>
<p>Gets the child of the <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a>, or <code class="literal">NULL</code> if the bin contains
no child widget. The returned widget does not have a reference
added, so you do not need to unref it.</p>
<div class="refsect3">
<a name="gtk-bin-get-child.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
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<col width="150px" class="parameters_name">
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<col width="200px" class="parameters_annotations">
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<td class="parameter_name"><p>bin</p></td>
<td class="parameter_description"><p>a <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
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<div class="refsect3">
<a name="gtk-bin-get-child.returns"></a><h4>Returns</h4>
<p>the child of <em class="parameter"><code>bin</code></em>
, or <code class="literal">NULL</code> if it does
not have a child. </p>
<p><span class="annotation">[<acronym title="The data is owned by the callee, which is responsible of freeing it."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
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<div class="refsect1">
<a name="GtkBin.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GtkBin-struct"></a><h3>struct GtkBin</h3>
<pre class="programlisting">struct GtkBin;</pre>
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<hr>
<div class="refsect2">
<a name="GtkBinClass"></a><h3>struct GtkBinClass</h3>
<pre class="programlisting">struct GtkBinClass {
  GtkContainerClass parent_class;
};
</pre>
<div class="refsect3">
<a name="GtkBinClass.members"></a><h4>Members</h4>
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